Step barrel exercise apparatus



FIG. 1 is a perspective view of a step barrel exercise apparatus showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 6 thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the step barrel exercise apparatus, which form no part of the claimed design. 

CLAIM The ornamental design for a step barrel exercise apparatus, as shown and described herein. 